1223321121010 has 16 divisors (see below), whose sum is σ = 2203464862872. Its totient is φ = 488998038400.

The previous prime is 1223321120981. The next prime is 1223321121013. The reversal of 1223321121010 is 101211233221.

It can be written as a sum of positive squares in 4 ways, for example, as 1020894014449 + 202427106561 = 1010393^2 + 449919^2 .

It is not an unprimeable number, because it can be changed into a prime (1223321121013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41285701 + ... + 41315320.

Almost surely, 2^{1223321121010} is an apocalyptic number.

1223321121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223321121010 is a deficient number, since it is larger than the sum of its proper divisors (980143741862).

1223321121010 is a wasteful number, since it uses less digits than its factorization.

1223321121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82602509.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1223321121010 its reverse (101211233221), we get a palindrome (1324532354231).

The spelling of 1223321121010 in words is "one trillion, two hundred twenty-three billion, three hundred twenty-one million, one hundred twenty-one thousand, ten".